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Hi I have Tryed to fix a old bottle battery. I have replacing 4 cell. There are 40 battery in 10s 18650 2 ah. I have used same cell size on replacment cell. I have charge the 10 cell pack induvidial up to 3,1 to 3,5 V. I have ca 35 on battery pack. When I try to charge it, The bms will not let...

Hi I am from norway and new on this forum. I have lot on net and could not find the right noe in the jungel of controller s. I have a old ebike ( Liberty Electric 443 mountain) and the controller has blown. (Wzkd3615ka-hd4 brushless intellect 1:1 controller) the bike has trottle, motor brake...